Long decorative material with embossing in register with pattern and rolling method and device therefor

ABSTRACT

A long decorative material with an embossing in register with a pattern, a rolling method and a device therefor are described herein. The method comprises a feeding step of feeding a layered raw material of a long decorative material to be rolled into oppositely rolling rollers; and a rolling step of hot rolling an embossing on the transparent plastic layer. A feeding tension of a printed plastic layer is adjusted according to a longitudinal deviation between the embossing and the pattern in the rolling step. The device comprises a first feeding device, a second feeding device, the oppositely rolling rollers, a detecting device, and a tension controller disposed on the second feeding device. According to the long decorative material with the embossing in register with the pattern manufactured by the method, the embossing hot-rolled on the transparent plastic layer is in register with the pattern on the printed plastic layer. The method, device and the long decorative material with the embossing in register with the pattern processed thereby can implement the embossing on the transparent plastic layer in register with the pattern on the printed plastic layer and have high production efficiency, low cost and less energy consumption.

CROSS-REFERENCE TO RELATED APPLICATIONS

This Non-provisional application claims priority under 35 U.S.C. §119(a)on Patent Application No(s). 201610415455.9 filed in Republic of Chinaon Jun. 15, 2016, the entire contents of which are hereby incorporatedby reference.

BACKGROUND OF THE INVENTION Field of the Invention

The present invention relates to a polyvinyl chloride (PVC) decorativematerial, and more particularly, to a PVC decorative material where anembossing on an upper transparent plastic layer is in register with apattern on a lower printed plastic layer and the length is continuous,and a rolling method and a device for rolling the PVC decorativematerial. The decorative material may also be other thermoplasticplastic having stretchability.

Description of the Related Art

Polyvinyl chloride (PVC) decorative material is a new and light floordecorative material that is very popular in the world, especially widelypopular in Europe, America, and Japan and Korea in Asia. At present, thematerial has also been accepted by large and medium-sized cities indomestic and is increasingly applied in families, hospitals, schools,office buildings, factories, supermarkets, airport halls, stadiums, andother sites.

The existing PVC decorative material is usually formed by overlaying atransparent plastic layer on the surface (equivalent to a transparentlayer, a protective layer, and a wear-resistant layer), an image plasticlayer with a pattern in the middle (equivalent to a printing layer, adecorative layer, and a colored film layer), and a base layer in thebottom (equivalent to a bottom layer and a bottom plate). The PVCdecorative material in such a structure may either be directly paved onthe floor for use or bonded on the surface of a foam board, a laminatedboard, or a wood-plastic board to form a composite board. With thecontinuous development of the market, the decorative requirements of thePVC decorative material are increasingly improved. Users not only expectto process an embossing on the surface of the transparent plastic layerto increase a three-dimensional sense of the flooring, but also expectto make the embossing on the transparent plastic layer in register withthe pattern on the image plastic layer (such as a wood grain, a stonegrain, or a fabric grain), to make the embossing become the wood grain,stone grain, or fabric grain, thereby further improving the sense ofreality and the three-dimensional sense of the PVC decorative materialand increasing the simulation effect of the flooring.

A lamination method is a method adopted currently for registering theembossing of the transparent plastic layer with the pattern of the imageplastic layer. To make the embossed pattern (the embossing for short) onthe surface transparent plastic layer in register with the pattern (suchas the wood grain, stone grain, or fabric grain) on the image plasticlayer (i.e., the plastic layer printed with continuous unit patterns),the transparent plastic layer, the image plastic layer, and the baselayer are firstly tailored into rectangle blocks with the same length,wherein the length shall be the length of one unit pattern on the imageplastic layer, and then the transparent plastic layer, the image plasticlayer, and the base layer are overlaid together in sequence and areplaced on a lower pressing plate. The raised pattern on an upperpressing plate is aligned with the corresponding pattern on the imageplastic layer through a positioning device, and finally the upperpressing plate is pressed on the transparent plastic layer, heating andpressing. Thus, the embossing pressed on the transparent plastic layeris in register with the pattern of the image plastic layer. Thetraditional lamination method has great defects: one pressing plate canonly press two pieces of pros and cons PVC decorative materials at atime; during mass production, a large number of the pressing plates arerequired in case of increasing the yield, which leads to high costs andhigh energy consumption; the pattern on the pressing plate is alignedwith the pattern on the image plastic layer, which requires manualoperation, resulting in heavy workload and low accuracy rate and causinglow production efficiency. Moreover, the length of each piece of the PVCdecorative material is fixed, and the patterns of the manufacturedflooring are repetitive, which does not comply with the property ofnatural materials.

U.S. Pat. No. 5,122,212 (filing date is Oct. 27, 1989 and applicationSer. No. 07/428262) discloses a novel improved process for registeringthe pattern. According to the process, a bottom plate, a decorativelayer (transfer printing), and a wear-resistant layer achieve a patternregister effect through a register roller, and during rolling, thepattern on the decorative layer should correspond to the patterndesigned on the register roller to press a pattern register effect. Thetechnical solution tries to use a rolling process to improve thetraditional lamination method above, so as to register the embossing onthe wear-resistant layer with the pattern on the decorative layer.Unfortunately, the technical solution of the patent cannot be applied inpractice all the time due to a fatal defect. The fatal defect is that:when the bottom plate, the decorative layer, and the wear-resistantlayer are embossed by the register roller synchronously, an longitudinalextension of the decorative layer is unavoidable due to a rolling forceand a rolling temperature (over 85° C.), while the grains on theregister roller for the embossing will not extend, which will certainlylead to a coincidence deviation between the pattern on the registerroller and the pattern on the decorative layer and affect athree-dimensional effect and a simulation effect of the PVC decorativematerial, so that the product quality cannot be guaranteed. Because theregister roller tightly extrudes the decorative layer while embossing, arelative position between the register roller and the decorative layeris tightly pressed by the register roller, which can neither beimplemented through adjusting the feeding speed of the printing layer,nor implemented through adjusting the rotation speed of the registerroller.

After years of exploration, on May 28, 2003, Chinese Patent PublicationNo. CN1420025A (application no. is 02149569.6) discloses a Long FloorDecorative Material with Printed Pattern in Register with EmbossedPattern. The patent technology is intended to solve the technicalproblem that “a printed pattern of a printing layer cannot be inregister with an embossed pattern due to transformation (see paragraph 2in page 5 of the Description)”, and this invention “directly uses aglass fiber film made of waterproof stiffener to minimize thetransformation of the printed pattern” (see paragraph 2 in page 5 of theDescription). Although the method solves the above problem to somedegree, the glass fiber film made of waterproof stiffener needs to beadded, which increases the process costs and the material costs. Thereason why this invention solves the problem to some degree is that oncea register deviation exists between the printed pattern of the printinglayer and the embossed pattern on the embossing roller along alongitudinal direction during rolling, the patent technology cannotcorrect the deviation through dynamic adjustment during rolling. Becausean embossing roll machine tightly presses the printing layer whileembossing, a relative position between the embossing roller and theprinting layer cannot be implemented through adjusting the feeding speedof the printing layer and/or adjusting the rotation speed of theembossing roller (having the same defect with that of the U.S. Pat. No.5,122,212 above).

For decades, those skilled in the art have been keeping exploring aneffective way to implement coincidence of the embossing of thetransparent plastic layer with the pattern of the image plastic layer,but no breakthrough is achieved. Until now, the coincidence of embossingcan only be implemented using the oldest lamination method above in theart.

BRIEF SUMMARY OF THE INVENTION

An objective of the present invention is to provide a rolling method fora long decorative material with an embossing in register with a pattern,which can implement register between the embossing on a transparentplastic layer and the pattern on a printed plastic layer and have highproduction efficiency, low cost and less energy consumption.

Another problem to be solved by the present invention is to provide arolling device for a long decorative material with an embossing inregister with a pattern, which can be used to process a long decorativematerial with the embossing in register with the pattern and have highproduction efficiency, low cost and less energy consumption.

One more problem to be solved by the present invention is to process thelong decorative material with the embossing in register with the patternusing the foregoing method and device, which has low cost, goodsimulation effect and un-limited cutting length and complies with theproperty of a natural material.

To fulfill the foregoing objective, the present invention adopts thefollowing technical solution.

A rolling method for a long decorative material with an embossing inregister with a pattern comprises a feeding step of feeding a layeredraw material of a long decorative material to be rolled into oppositelyrolling rollers, the layered raw material comprising a transparentplastic layer and a printed plastic layer printed with continuous unitpatterns; and a rolling step of hot rolling an embossing on thetransparent plastic layer. In the feeding step, the transparent plasticlayer is located at one side of the printed plastic layer where thecontinuous unit patterns are printed, the transparent plastic layer isadjacent to an embossing roller of the oppositely rolling rollers, andan embossed pattern disposed around an outer circle of the embossingroller corresponds to a pattern of one unit pattern on the printedplastic layer. In the rolling step, a longitudinal deviation of theembossing is adjusted. An adjusting step comprises detecting thelongitudinal deviation between the embossed pattern on the embossingroller and the corresponding pattern on the printed plastic layer duringrolling and adjusting a feeding tension of the printed plastic layeraccording to the longitudinal deviation, so as to adjust a stretchinglength of the printed plastic layer before rolling, so that thelongitudinal deviation in subsequent rolling is reduced until theembossed pattern is longitudinally in register with the correspondingpattern on the printed plastic layer during rolling, and the embossinghot-rolled on the transparent plastic layer is longitudinally inregister with the corresponding pattern on the printed plastic layer.

In one embodiment of the invention, the adjusting step may comprisedetecting a position of a preset part on each unit pattern of theprinted plastic layer and detecting a position of a corresponding parton the embossing roller corresponding to the preset part at the sametime; when the preset part is detected to be ahead of the correspondingpart, increase the feeding tension of the printed plastic layer toincrease the stretching length of the printed plastic layer beforerolling, so as to reduce an ahead value of the preset part in subsequentrolling until a deviation between the preset part and the correspondingpart is zero, so that the embossing hot-rolled on the transparentplastic layer is longitudinally in register with the correspondingpattern on the printed plastic layer; and when the preset part isdetected to be lagging behind the corresponding part, decrease thefeeding tension of the printed plastic layer to decrease the stretchinglength of the printed plastic layer before rolling, so as to increase alagged value of the preset part in the subsequent rolling until thedeviation between the preset part and the corresponding part is zero, sothat the embossing hot-rolled on the transparent plastic layer islongitudinally with the corresponding pattern on the printed plasticlayer.

In one embodiment of the invention, a spread length of the embossedpattern disposed around the outer circle of the embossing roller may be1.01 to 1.5 times of a length a of one unit pattern on the printedplastic layer before stretching; and a heating temperature in therolling step ranges from 85° C. to 250° C.

In one embodiment of the invention, in the rolling step, thelongitudinal deviation of the embossing may be measured by a distancedifference or a time difference between the detected preset part on eachunit pattern of the printed plastic layer and the detected correspondingpart on the embossing roller corresponding to the preset part.

In one embodiment of the invention, during the process of adjusting thelongitudinal deviation of the embossing in the rolling step, a lateraldeviation of the image may be further adjusted. When a lateral deviationis detected to be existing between the pattern on the printed plasticlayer and the embossed pattern on the embossing roller, the plasticlayer or the embossing roller may be moved along a lateral direction, sothat the pattern on the printed plastic layer is in register with theembossed pattern around the outer circle of the embossing roller on thelateral direction.

In an embodiment of the present invention, the layered raw material ofthe long decorative material to be rolled may further comprise a plasticbase layer. The plastic base layer may be delivered to the oppositelyrolling rollers simultaneously in the feeding step, and the plastic baselayer is located at the other side of the printed plastic layer oppositeto the side printed with the continuous unit patterns.

A rolling device for implementing the rolling method for the longdecorative material comprises: a first feeding device, a second feedingdevice, the oppositely rolling rollers including the embossing rollerand a backing roller, and a control device for controlling the firstfeeding device, the second feeding device and the oppositely rollingrollers. The transparent plastic layer enters the oppositely rollingrollers from the first feeding device, and the printed plastic layerenters the oppositely rolling rollers from the second feeding device.The transparent plastic layer is located at the side of the printedplastic layer printed with the continuous unit patterns, and thetransparent plastic layer is adjacent to the embossing roller. Therolling device further comprises a detecting device for detecting thelongitudinal deviation between the embossed pattern on the embossingroller and the corresponding pattern on the printed plastic layer duringrolling, and a tension controller disposed on the second feeding device;when the detecting device detects that the longitudinal deviationappears between the embossed pattern on the embossing roller and thecorresponding pattern on the printed plastic layer, the control devicecontrols the tension controller to adjust the tension of the printedplastic layer between the second feeding device and the oppositelyrolling rollers according to the longitudinal deviation, so as to adjustthe stretching length of the printed plastic layer before rolling, sothat the longitudinal deviation in subsequent rolling is reduced untilthe embossed pattern is in register with the corresponding pattern onthe printed plastic layer during rolling, and the embossing hot-rolledon the transparent plastic layer is longitudinally in register with thecorresponding pattern on the printed plastic layer.

In one embodiment of the invention, the control device may control aheating temperature to be between 85° C. and 250° C. through controllinga hot medium flowing into the oppositely rolling rollers, and a spreadlength of the embossed pattern disposed around the outer circle of theembossing roller may be 1.01 to 1.5 times of the length of one unitpattern on the printed plastic layer before stretching.

In one embodiment of the invention, the detecting device may comprise afirst sensor for detecting a position of a preset part in each unitpattern on the printed plastic layer and a second sensor for detecting aposition of a corresponding part on the embossing roller correspondingto the preset part, and the control device may use a distance differenceor a time difference of signals detected by the two sensors as thelongitudinal deviation of the embossing in the rolling step to controlthe tension of the printed plastic layer between the second feedingdevice and the oppositely rolling rollers, so as to adjust thestretching length of the printed plastic layer before rolling, so thatthe longitudinal deviation in subsequent rolling is reduced until theembossed pattern is in register with the corresponding pattern on theprinted plastic layer during rolling, and the embossing hot-rolled onthe transparent plastic layer is longitudinally in register with thecorresponding pattern on the printed plastic layer.

In one embodiment of the invention, the first sensor may be a color marksensor or an image sensor, and the second sensor (82) may be a positionsensor, a displacement sensor, or a rotation speed sensor.

In one embodiment of the invention, a magnetic powder brake may beadopted as the tension controller and may be disposed on a feeding axleof the second feeding device.

In one embodiment of the invention, a lateral rectification device maybe further comprised. The lateral rectification device may comprise athird sensor for detecting a lateral deviation of the unit pattern onthe printed plastic layer and a lateral transmission gear for making thesecond feeding device move along a lateral direction, and the controldevice may control the lateral transmission gear according to thelateral deviation of the unit pattern on the printed plastic layerdetected by the third sensor, so as to make the second feeding devicemove along the lateral direction correspondingly, so that the pattern onthe printed plastic layer is in register with the embossed patternaround the outer circle of the embossing roller on the lateraldirection.

In one embodiment of the invention, a third feeding device for feeding aplastic base layer in the oppositely rolling rollers may be furthercomprised. The plastic base layer may be adjacent to the backing rollerand may be hot-rolled on the other side of the printed plastic layeropposite to the transparent plastic layer by the embossing roller andthe backing roller.

The long decorative material with the embossing in register with thepattern manufactured by the rolling method comprises the transparentplastic layer and the printed plastic layer, wherein the embossinghot-rolled on the transparent plastic layer is in register with thepattern on the printed plastic layer.

In one embodiment of the invention, the long decorative material mayfurther comprise a plastic base layer hot-rolled below the printedplastic layer.

Compared with the prior art, the present invention has the followingbeneficial effects. The above-mentioned conventional ways of the priorart are broken by employing the foregoing rolling method for the longdecorative material with the embossing in register with the pattern. Inthe rolling step, the feeding tension of the printed plastic layer isadjusted according to the longitudinal deviation between the embossedpattern on the embossing roller and the corresponding pattern on theprinted plastic layer, so as to adjust the stretching length of theimage plastic layer before rolling, so that the longitudinal deviationin subsequent rolling is reduced until the embossed pattern is inregister with the corresponding pattern on the printed plastic layerduring rolling, and the embossing hot-rolled on the transparent plasticlayer is longitudinally in register with the corresponding pattern onthe printed plastic layer. This method can correct the deviation betweenthe embossing and the pattern through the dynamic adjustment during theprocess of rolling. The processing of registering the embossing on thetransparent plastic layer with the pattern on the printed plastic layeris realized through the rolling method for hot rolling the transparentplastic layer and the printed plastic layer, greatly reducing theproduction costs and the energy losses, which is a major breakthroughfor flooring processing.

After one embossing roller is manufactured, the spread length of theembossed pattern on the outer circle thereof is fixed, so that thespread length of the embossed pattern disposed around the outer circleof the embossing roller is 1.01 to 1.5 times of the length of one unitpattern on the printed plastic layer before stretching (for a specificembossing roller, the spread length of the embossed pattern disposedaround the outer circle thereof is a certain value between 1.01 a and1.5 a), so that the pattern on the stretched printed plastic layer is inregister with the embossed pattern on the outer circle of the embossingroller, thereby realizing the embossing on the transparent plastic layerin register with the pattern on the printed plastic layer.

The present invention has further beneficial effects. According to therolling device for implementing the rolling method for the longdecorative material, the second feeding device and the oppositelyrolling rollers are improved on the basis of the existing device,wherein the tension controller is additionally disposed on the secondfeeding device, and the detecting device for detecting the longitudinaldeviation between the embossed pattern on the embossing roller and thecorresponding pattern on the printed plastic layer during rolling isadditionally added. When the printed plastic layer on the second feedingdevice is mechanically transferred or manually fed to the oppositelyrolling rollers, the oppositely rolling rollers will have a tensileforce of rolling the printed plastic layer into the oppositely rollingrollers; when the detecting device detects that the longitudinaldeviation appears between the embossed pattern on the embossing rollerand the corresponding pattern on the printed plastic layer, the controldevice controls the tension controller to adjust the tension of theprinted plastic layer between the second feeding device and theoppositely rolling rollers according to the longitudinal deviation, soas to adjust the stretching length of the printed plastic layer beforerolling and adjust the relative position between the oppositely rollingrollers and the printed plastic layer through the change of thestretching length of the printed plastic layer, thereby decreasing thelongitudinal deviation during the subsequent rolling until the embossedpattern on the embossing roller is in register with the correspondingpattern on the printed plastic layer during rolling. Thus, the embossinghot-rolled on the transparent plastic layer is longitudinally inregister with the corresponding pattern on the printed plastic layer.This device can use the rolling method to implement a processing methodof registering the embossing of the transparent plastic layer with thepattern of the printed plastic layer, thereby improving the productionefficiency by dozens of times, greatly reducing the production costs andthe energy losses, which is a major breakthrough for the flooringprocessing.

For the long decorative material with the embossing in register with thepattern manufactured by the rolling method, the embossing hot-rolled onthe transparent plastic layer is in register with the pattern on theprinted plastic layer, thereby enhancing the sense of reality and thethree-dimensional sense of the decorative material, which improves thesimulation effect of the decorative material and has low production costin unit area and high production efficiency. Moreover, because the longdecorative material is manufactured by the continuous rolling of theoppositely rolling rollers, the length thereof is greater than that ofthe decorative material processed using the lamination method in theprior art, and the long decorative material is the decorative materialhaving continuous length (including a plurality of continuous unitpatterns). Different cutting positions can be set for such a longdecorative material decorative material having the continuous length,the cutting lengths are not limited, and the patterns of cut blocks arenot repetitive. The flooring plank formed by bonding the blocks on thesurface of a foaming board, a laminated board, a plastic base layer, ora wood-plastic board complies with the property of a natural materialbetter.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structure diagram of a processing device according to oneembodiment of the present invention;

FIG. 2 is a structure diagram of a second feeding device according toone embodiment of the present invention;

FIG. 3 is a sectional structural diagram of a long decorative materialwith an embossing in register with a pattern according to one embodimentof the invention;

FIG. 4 is a structure diagram of unit patterns connected end to endaccording to one embodiment of the invention;

FIG. 5 is a structure diagram of an embossing roller according to oneembodiment of the invention; and

FIG. 6 is a structure diagram of a third feeding device additionallydisposed in FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

In order to represent the technical solution of the present inventionmore clearly, the present invention will be explained in details withreference to the accompanying drawings FIG. 1 to FIG. 6 hereinafter. Itis to be understood that the detailed embodiments described in thedescription are only intended to interpret the present invention, ratherthan to define the protection scope of the present invention.

The present invention relates to a rolling method for a long decorativematerial with an embossing in register with a pattern, comprising:

-   -   a feeding step of feeding a layered raw material of a long        decorative material 13 to be rolled into oppositely rolling        rollers 7, the layered raw material comprising a transparent        plastic layer 1 and a printed plastic layer 3 printed with        continuous unit patterns; and    -   a rolling step of hot rolling an embossing on the transparent        plastic layer 1.

In the feeding step, the transparent plastic layer 1 is located at oneside of the printed plastic layer 3 where the continuous unit patternsare printed, the transparent plastic layer 1 is adjacent to an embossingroller 71 of the oppositely rolling rollers 7, and an embossed pattern712 disposed around an outer circle of the embossing roller 71corresponds to a pattern 32 of one unit pattern on the printed plasticlayer 3. Optionally, a spread length of the embossed pattern 712disposed around the outer circle of the embossing roller 71 is 1.01 to1.5 times of a length a of one unit pattern on the printed plastic layer3 before stretching. In a lateral direction, the width of the printedplastic layer 3 changes little after the stretching, and a deviation ofthe embossing in a width direction is hard to be visually noticed andcan be neglected. Optionally, the width of the embossed pattern 712 onthe outer circle of the embossing roller 71 is 0.95-1 times of the widthof the unit pattern on the printed plastic layer 3 before stretching.

In the rolling step, a longitudinal deviation of the embossing isadjusted. The adjusting step comprises detecting the longitudinaldeviation between the embossed pattern 712 on the embossing roller 71and the corresponding pattern 32 on the printed plastic layer 3 duringrolling and adjusting a feeding tension of the printed plastic layer 3according to the longitudinal deviation, so as to adjust a stretchinglength of the printed plastic layer 3 before rolling, so that thelongitudinal deviation in subsequent rolling is reduced until theembossed pattern 712 is in register with the corresponding pattern 32 onthe printed plastic layer 3 during rolling. Thus, the embossinghot-rolled on the transparent plastic layer 1 is longitudinally inregister with the corresponding pattern 32 on the printed plastic layer3.

The longitudinal deviation of the embossing is measured by a distancedifference or a time difference between a detected preset part 31 oneach unit pattern of the printed plastic layer 3 and a detectedcorresponding part 711 on the embossing roller 71 corresponding to thepreset part 31. Optionally, the adjusting step comprises: detecting theposition of the preset part 31 on each unit pattern of the printedplastic layer 3 and detecting the position of the corresponding part 711on the embossing roller 71 corresponding to the preset part 31 at thesame time. When the preset part 31 is detected to be ahead of thecorresponding part 711, increase the feeding tension of the printedplastic layer 3 to increase the stretching length of the printed plasticlayer 3 before rolling, so as to reduce an ahead value of the presetpart 31 in subsequent rolling until the deviation between the presetpart 31 and the corresponding part 711 is zero, so that the embossinghot-rolled on the transparent plastic layer 1 is longitudinally inregister with the corresponding pattern 32 on the printed plastic layer3. When the preset part 31 is detected to be lagging behind thecorresponding part 711, decrease the feeding tension of the printedplastic layer 3 to decrease the stretching length of the printed plasticlayer 3 before rolling, so as to increase a lagged value of the presetpart 31 in the subsequent rolling until the deviation between the presetpart 31 and the corresponding part 711 is zero, so that the embossing onthe transparent plastic layer 1 is longitudinally in register with thecorresponding pattern 32 on the printed plastic layer 3. Certainly, theregister mentioned herein refers to register in a deviation range hardto be visually noticed, for example, the deviation is 0-2 mm and ispreferably 0-0.5 mm.

Optionally, the control device 10 controls a heating temperature to bebetween 85° C. and 250° C. through controlling a hot medium flowing intothe oppositely rolling rollers 7.

During the process of adjusting the longitudinal deviation of theembossing in the rolling step, a lateral deviation of the pattern isfurther adjusted. When a lateral deviation is detected to be existingbetween the pattern 32 on the printed plastic layer 3 and the embossedpattern 712 on the embossing roller 71, the transparent plastic layer 1or the embossing roller 71 is moved along a lateral direction, so thatthe pattern 32 on the printed plastic layer 3 is in register with theembossed pattern 712 around the outer circle of the embossing roller 71on the lateral direction.

Further, the layered raw material of the long decorative material 13 tobe rolled further comprises a plastic base layer 5. The plastic baselayer 5 is delivered to the oppositely rolling rollers 7 simultaneouslyin the feeding step, and the plastic base layer 5 is located at theother side of the printed plastic layer 3 opposite to the side printedwith the continuous unit patterns.

A rolling device for implementing the rolling method for the longdecorative material 13 comprises: a first feeding device 2, a secondfeeding device 4, the oppositely rolling rollers 7 including theembossing roller 71 and a backing roller 72, a control device 10 forcontrolling the first feeding device 2, the second feeding device 4 andthe oppositely rolling rollers 7, a detecting device 8 for detecting thelongitudinal deviation between an embossed pattern 712 on the embossingroller 71 and the corresponding pattern 32 on the printed plastic layer3 during rolling, and a tension controller 41 disposed on the secondfeeding device 4. The transparent plastic layer 1 enters the oppositelyrolling rollers 7 from the first feeding device 2, and the printedplastic layer 3 enters the oppositely rolling rollers 7 from the secondfeeding device 4. The transparent plastic layer 1 is located at one sideof the printed plastic layer 3 printed with the continuous unitpatterns, and the transparent plastic layer 1 is adjacent to theembossing roller 71. As described in the foregoing rolling method forthe long decorative material 13, the embossed pattern 712 disposedaround the outer circle of the embossing roller 71 corresponds to thepattern 32 of one unit pattern on the printed plastic layer 3, andoptionally, the spread length of the embossed pattern 712 disposedaround the outer circle of the embossing roller 71 is 1.01 to 1.5 timesof the length a of one unit pattern on the printed plastic layer 3before stretching. When the printed plastic layer 3 on the secondfeeding device 4 is mechanically transferred or manually fed to theoppositely rolling rollers 7, the oppositely rolling rollers 7 will havea tensile force of rolling the printed plastic layer 3 into theoppositely rolling rollers 7. When the detecting device 8 detects thatthe longitudinal deviation appears between the embossed pattern 712 onthe embossing roller 71 and the corresponding pattern 32 on the printedplastic layer 3, the control device 10 controls the tension controller41 to adjust the tension of the printed plastic layer 3 between thesecond feeding device 4 and the oppositely rolling rollers 7 accordingto the longitudinal deviation, so as to adjust the stretching length ofthe printed plastic layer 3 before rolling, thereby decreasing thelongitudinal deviation in the subsequent rolling until the embossedpattern 712 on the embossing roller 71 is in register with thecorresponding pattern 32 on the printed plastic layer 3 during rolling.Thus, the embossing hot-rolled on the transparent plastic layer 1 islongitudinally in register with the corresponding pattern 32 on theprinted plastic layer 3. Optionally, the detecting device 8 comprises afirst sensor 81 for detecting a position of the preset part 31 in eachunit pattern on the printed plastic layer 3 and a second sensor 82 fordetecting the position of the corresponding part 711 on the embossingroller 71 corresponding to the preset part 31. The control device 10uses a distance difference or a time difference of signals detected bythe two sensors 81 and 82 as the longitudinal deviation of the embossingin the rolling step to control the tension of the printed plastic layer3 between the second feeding device 4 and the oppositely rolling rollers7, so as to adjust the stretching length of the printed plastic layer 3before rolling, so that the longitudinal deviation in the subsequentrolling is reduced until the embossed pattern 712 is in register withthe corresponding pattern 32 on the printed plastic layer 3 duringrolling. Thus, the embossing hot-rolled on the transparent plastic layer1 is longitudinally in register with the corresponding pattern 32 of theprinted plastic layer 3. Optionally, the first sensor 81 is a color marksensor or an image sensor, the second sensor 82 is a position sensor, adisplacement sensor, or a rotation speed sensor, and a magnetic powderbrake is adopted as the tension controller 41 and is disposed on afeeding axle 42 of the second feeding device 4.

The preset part 31 is preferably a partial pattern of a certain part oneach unit pattern of the printed plastic layer 3 or is preferably achromatic printing line (may either be a black chromatic line, or acolor chromatic line in other colors) at the side of the printed plasticlayer 3. A color mark sensor is adopted as the first sensor 81, thecorresponding part 711 is a magnetic block disposed at an end face ofthe embossing roller 71, and a Hall sensor is adopted as the secondsensor 82. The embossed pattern 712 on the embossing roller 71corresponding to the magnetic block corresponds to the pattern 32 on theprinted plastic layer 3 corresponding to the preset part 31.

In the lateral direction, the width of the printed plastic layer 3changes little after the stretching, and the deviation of the embossingin the width direction is hard to be visually noticed and can beneglected. Optionally, the width of the embossed pattern 712 on theouter circle of the embossing roller 71 is 0.95-1 times of the width ofthe unit pattern on the printed plastic layer 3 before stretching. Toprevent the printed plastic layer 3 from deviation during feeding, alateral rectification device 9 may be disposed. The lateralrectification device 9 includes a third sensor 91 for detecting alateral deviation of the unit pattern on the printed plastic layer 3 anda lateral transmission gear 92 for making the second feeding device 4move along the lateral direction. The control device 10 controls thelateral transmission gear 92 according to the lateral deviation of theunit pattern on the plastic layer 3 detected by the third sensor 91, soas to make the second feeding device 4 move along the lateral directioncorrespondingly, so that the pattern 32 on the printed plastic layer 3is in register with the embossed pattern 712 around the outer circle ofthe embossing roller 71 on the lateral direction. During practicalapplication, a third feeding device 14 for feeding a plastic base layer5 in the oppositely rolling rollers 7 may also be additionally disposed.The plastic base layer 5 is adjacent to the backing roller 72 and ishot-rolled on the other side of the printed plastic layer 3 opposite tothe transparent plastic layer 1 by the embossing roller 71 and thebacking roller 72.

The long decorative material 13 with the embossing in register with thepattern manufactured using the foregoing rolling method comprises thetransparent plastic layer 1 and the printed plastic layer 3. Theembossing hot-rolled on the transparent plastic layer 1 is in registerwith the pattern 32 on the printed plastic layer 3. Optionally, the longdecorative material 13 further comprises a plastic base layer 5hot-rolled below the printed plastic layer 3.

The transparent plastic layer, the printed plastic layer, and theplastic base layer according to the foregoing solutions of the presentinvention refer to a PVC material layer, and certainly, may also referto other thermoplastic layer with stretchability or other materialshaving similar functions.

What is claimed is:
 1. A long decorative material with an embossing inregister with a pattern, comprising: a feeding step of feeding a layeredraw material of a long decorative material (13) to be rolled intooppositely rolling rollers (7), the layered raw material comprising atransparent plastic layer (1) and a printed plastic layer (3) printedwith continuous unit patterns; and a rolling step of hot rolling anembossing on the transparent plastic layer (1); wherein in the feedingstep, the transparent plastic layer (1) is located at one side of theprinted plastic layer (3) where the continuous unit patterns areprinted, the transparent plastic layer (1) is adjacent to an embossingroller (71) of the oppositely rolling rollers (7), and an embossedpattern (712) disposed around an outer circle of the embossing roller(71) corresponds to a pattern (32) of one unit pattern on the printedplastic layer (3), wherein a longitudinal deviation of the embossing isadjusted in the rolling step, an adjusting step comprises detecting thelongitudinal deviation between the embossed pattern (712) on theembossing roller (71) and the corresponding pattern (32) on the printedplastic layer (3) during rolling and adjusting a feeding tension of theprinted plastic layer (3) according to the longitudinal deviation, so asto adjust a stretching length of the printed plastic layer (3) beforerolling, so that the longitudinal deviation in subsequent rolling isreduced until the embossed pattern (712) is in register with thecorresponding pattern (32) on the printed plastic layer (3) duringrolling, and the embossing hot-rolled on the transparent plastic layer(1) is longitudinally in register with the corresponding pattern (32) onthe printed plastic layer (3).
 2. The rolling method for the longdecorative material according to claim 1, wherein the adjusting stepcomprises detecting a position of a preset part (31) on each unitpattern of the printed plastic layer and detecting a position of acorresponding part (711) on the embossing roller (71) corresponding tothe preset part (31) at the same time; when the preset part (31) isdetected to be ahead of the corresponding part (711), increase thefeeding tension of the printed plastic layer (3) to increase thestretching length of the printed plastic layer (3) before rolling, so asto reduce an ahead value of the preset part (31) in subsequent rollinguntil a deviation between the preset part (31) and the correspondingpart (711) is zero, so that the embossing hot-rolled on the transparentplastic layer (1) is longitudinally in register with the pattern (32) onthe printed plastic layer (3); and when the preset part (31) is detectedto be lagging behind the corresponding part (711), decrease the feedingtension of the printed plastic layer (3) to decrease the stretchinglength of the printed plastic layer (3) before rolling, so as toincrease a lagged value of the preset part (31) in the subsequentrolling until the deviation between the preset part (31) and thecorresponding part (711) is zero, so that the embossing hot-rolled onthe transparent plastic layer (1) is longitudinally in register with thecorresponding pattern (32) on the printed plastic layer (3).
 3. Therolling method for the long decorative material according to claim 1,wherein a spread length of the embossing pattern (712) disposed aroundthe outer circle of the embossing roller (71) is 1.01 to 1.5 times of alength (a) of one unit pattern on the printed plastic layer (3) beforestretching; and a heating temperature in the rolling step ranges from85° C. to 250° C.
 4. The rolling method for the long decorative materialaccording to claim 1, wherein in the rolling step, the longitudinaldeviation of the embossing is measured by a distance difference or atime difference between a detected preset part (31) on each unit patternof the printed plastic layer (3) and a detected corresponding part (711)on the embossing roller (71) corresponding to the preset part (31). 5.The rolling method for the long decorative material according to claim1, wherein during the process of adjusting the longitudinal deviation ofthe embossing in the rolling step, a lateral deviation of the pattern isfurther adjusted, and when a lateral deviation is detected to beexisting between the pattern (32) on the printed plastic layer (3) andthe embossed pattern (712) on the embossing roller (71), the transparentplastic layer (1) or the embossing roller (71) is moved along a lateraldirection, so that the pattern (32) on the printed plastic layer (3) isin register with the embossed pattern (712) around the outer circle ofthe embossing roller (71) on the lateral direction.
 6. The rollingmethod for the long decorative material according to claim 5, whereinthe layered raw material of the long decorative material to be rolledfurther comprises a plastic base layer (5), the plastic base layer (5)is delivered to the oppositely rolling rollers (7) simultaneously in thefeeding step, and the plastic base layer (5) is located at the otherside of the printed plastic layer (3) opposite to the side printed withthe continuous unit patterns.
 7. A rolling device for implementing therolling method for the long decorative material according to claim 1,comprising: a first feeding device (2), a second feeding device (4), theoppositely rolling rollers (7) including the embossing roller (71) and abacking roller (72), and a control device (10) for controlling the firstfeeding device (2), the second feeding device (4) and the oppositelyrolling rollers (7); the transparent plastic layer (1) entering theoppositely rolling rollers (7) from the first feeding device (2), theprinted plastic layer (3) entering the oppositely rolling rollers (7)from the second feeding device (4); the transparent plastic layer (1) islocated at the side of the printed plastic layer (3) where thecontinuous unit patterns are printed, and the transparent plastic layer(1) is adjacent to the embossing roller (71); wherein the rolling devicefurther comprises a detecting device (8) for detecting the longitudinaldeviation between the embossed pattern (712) on the embossing roller(71) and the corresponding pattern (32) on the printed plastic layer (3)during rolling and a tension controller (41) disposed on the secondfeeding device (4); when the detecting device (8) detects that thelongitudinal deviation appears between the embossed pattern (712) on theembossing roller (71) and the corresponding pattern (32) on the printedplastic layer (3), the control device (10) controls the tensioncontroller (41) to adjust the tension of the printed plastic layer (3)between the second feeding device (4) and the oppositely rolling rollers(7) according to the longitudinal deviation, so as to adjust thestretching length of the printed plastic layer (3) before rolling, sothat the longitudinal deviation in subsequent rolling is reduced untilthe embossed pattern (712) is in register with the corresponding pattern(32) on the printed plastic layer (3) during rolling, and the embossinghot-rolled on the transparent plastic layer (1) is longitudinally inregister with the corresponding pattern (32) on the printed plasticlayer (3).
 8. The rolling device according to claim 7, wherein thecontrol device (10) controls a heating temperature to be between 85° C.and 250° C. through controlling a hot medium flowing into the oppositelyrolling rollers (7); and a spread length of the embossed pattern (712)disposed around the outer circle of the embossing roller (71) is 1.01 to1.5 times of a length (a) of one unit pattern on the printed plasticlayer (3) before stretching.
 9. The rolling device according to claim 7,wherein the detecting device (8) comprises a first sensor (81) fordetecting a position of a preset part (31) in each unit pattern on theprinted plastic layer (3) and a second sensor (82) for detecting aposition of a corresponding part (711) on the embossing roller (71)corresponding to the preset part (31), the control device (10) uses adistance difference or a time difference of signals detected by the twosensors (81, 82) as the longitudinal deviation of the embossing in therolling step to control the tension of the printed plastic layer betweenthe second feeding device (4) and the oppositely rolling rollers (7), soas to adjust the stretching length of the printed plastic layer (3)before rolling, so that the longitudinal deviation in subsequent rollingis reduced until the embossed pattern (712) is in register with thecorresponding pattern (32) on the printed plastic layer (3) duringrolling, and the embossing hot-rolled on the transparent plastic layer(1) is longitudinally in register with the corresponding pattern (32) ofthe printed plastic layer (3).
 10. The rolling device according to claim9, wherein the first sensor (81) is a color mark sensor or an imagesensor, and the second sensor (82) is a position sensor, a displacementsensor, or a rotation speed sensor.
 11. The rolling device according toclaim 7, a magnetic powder brake is adopted as the tension controller(41) and is disposed on a feeding axle (42) of the second feeding device(4).
 12. The rolling device according to claim 7, further comprising alateral rectification device (9), wherein the lateral rectificationdevice (9) comprises a third sensor (91) for detecting a lateraldeviation of the unit pattern on the printed plastic layer (3) and alateral transmission gear (92) for making the second feeding device (4)move along a lateral direction, and the control device (10) controls thelateral transmission gear (92) according to the lateral deviation of theunit pattern on the printed plastic layer (3) detected by the thirdsensor (91), so as to make the second feeding device (4) move along thelateral direction correspondingly, so that the pattern (32) on theprinted plastic layer (3) is in register with the embossed pattern (712)around the outer circle of the embossing roller (71) on the lateraldirection.
 13. The rolling device according to claim 7, furthercomprising a third feeding device (14) for feeding a plastic base layer(5) in the oppositely rolling rollers (7), wherein the plastic baselayer (5) is adjacent to the backing roller (72) and is hot-rolled onthe other side of the printed plastic layer (3) opposite to thetransparent plastic layer (1) by the embossing roller (71) and thebacking roller (72).
 14. A long decorative material with an embossing inregister with a pattern manufactured by the rolling method according toclaim 1, comprising the transparent plastic layer (1) and the printedplastic layer (3), wherein the embossing hot-rolled on the transparentplastic layer (1) is in register with the pattern (32) on the printedplastic layer (3).
 15. The long decorative material according to claim14, further comprising a plastic base layer (5) hot-rolled below theprinted plastic layer (3).